A random boner that you get for no reason at all, like nothing has brought it on but you just happen to get one.

not to be mistaken for a real one... :)

You immediately want to RAM it down so now one sees or tuck it into your boxers and make sure it can't be seen easily. very humiliating at public events or family occasions where you feel least aroused or bonerific ;(

That kickass manly feeling you get frrom watching a Rambo movie (preferably the latest one). Usually result in a large (not gay) boner. Also known as the type of boner rambo gets. Its very discreet, since he shows no emotion.

Example 1:
Guy 1: Dude i just saw the newest rambo and got an enormous ramboner.
Guy 2: I would have too if I were you.